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 A296661 a(n) = (exp(k)*Gamma(1+n, k) - exp(-k)*Gamma(1+n, -k))/k! for k = 3. 1
 0, 1, 2, 15, 60, 381, 2286, 16731, 133848, 1211193, 12111930, 133290279, 1599483348, 20793814965, 291113409510, 4366705925619, 69867294809904, 1187744054815089, 21379392986671602, 406208467134180927, 8124169342683618540 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS FORMULA a(n) = ((A053486(n) - A000023(n+1))/6. MAPLE A296661 := n -> (exp(3)*GAMMA(1+n, 3) - exp(-3)*GAMMA(1+n, -3))/6: seq(simplify(A296661(n)), n=0..20); CROSSREFS Cf. A000023, A053486. Sequence in context: A071237 A006470 A084169 * A000181 A047146 A084187 Adjacent sequences:  A296658 A296659 A296660 * A296662 A296663 A296664 KEYWORD nonn AUTHOR Peter Luschny, Dec 18 2017 STATUS approved

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Last modified January 17 23:15 EST 2019. Contains 319251 sequences. (Running on oeis4.)